Combining Airborne Photographs and Spaceborne SAR Data to Monitor Temperate Glaciers: Potentials and Limits

Trouvé, Emmanuël; Vasile, Gabriel; Bombrun, Lionel; Grussenmeyer, Pierre; Landes, Tania; Nicolas, Jean‐Marie; Bolon, Philippe; Pétillot, Ivan; Julea, Andreea; Valet, Lionel; Chanussot, Jocelyn; Koehl, Mathieu

doi:10.1109/tgrs.2006.890554

Cited by 55 publications

(40 citation statements)

References 52 publications

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“…Residual fringes can be due to atmospheric artifacts or to an evolution of the velocity field. The authors have shown that one-day atmospheric changes are minimal in winter [6]. Residual fringes observed on the upper part of the Argentière glacier can be interpreted as an evolution of the displacement field.…”

Section: B Comparison With the Four-pass Insar Methodsmentioning

confidence: 98%

“…In this section, experimental results are presented using four descending one-day ERS-1/2 tandem interferometric data acquired in the Alps over the Chamonix Mont-Blanc area from October 1995 to April 1996 (Table I). This time series has been used to estimate displacement fields over glaciers [6] and to analyze fringe patterns and coherence levels [9]. In this letter, those interferograms are analyzed to determine if topographic fringes are correctly removed from the interferograms.…”

Section: B Comparison With the Four-pass Insar Methodsmentioning

confidence: 99%

“…YNTHETIC aperture radar (SAR) interferometry (InSAR) is widely used to create high-resolution and highaccuracy topographic maps [1], [2] and to derive velocity fields [3]- [6]. The interferometric phase is sensitive to different contributions, such as the topography, the atmospheric perturbations, and the ground displacement between the two acquisitions.…”

mentioning

confidence: 99%

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DEM Error Retrieval by Analyzing Time Series of Differential Interferograms

Bombrun

Trouvé²,

Vasile

et al. 2009

IEEE Geosci. Remote Sensing Lett.

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Abstract-Two-pass differential synthetic aperture radar interferometry processing have been successfully used by the scientific community to derive velocity fields. Nevertheless, a precise digital elevation model (DEM) is necessary to remove the topographic component from the interferograms. This letter presents a novel method to detect and retrieve DEM errors by analyzing time series of differential interferograms. The principle of the method is based on the comparison of fringe patterns with the perpendicular baseline. First, a mathematical description of the algorithm is exposed. Then, the algorithm is applied on a series of four one-day European Remote Sensing 1 and 2 satellite (ERS-1/2) interferograms.Index Terms-Digital elevation model (DEM), interferogram time series, synthetic aperture radar (SAR) interferometry (InSAR).

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Section: B Comparison With the Four-pass Insar Methodsmentioning

confidence: 98%

Section: B Comparison With the Four-pass Insar Methodsmentioning

confidence: 99%

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DEM Error Retrieval by Analyzing Time Series of Differential Interferograms

Bombrun

Trouvé²,

Vasile

et al. 2009

IEEE Geosci. Remote Sensing Lett.

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“…Current spaceborne and airborne radars have been playing an important role in remote sensing applications [1,2,3]; however, even as good as they are envisioned and employed, it is impossible to provide a staring presence on a timescale of days, weeks, or months over a selected target or area of interest. Even if we can launch a satellite for a particular application, it would only be in view for a short time.…”

Section: Introductionmentioning

confidence: 99%

Near-Space Microwave Radar Remote Sensing: Potentials and Challenge Analysis

2010

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Near-space, defined as the region between 20 km and 100 km, offers many new capabilities that are not accessible to low earth orbit (LEO) satellites and airplanes, because it is above storm and not constrained by either the orbital mechanics of satellites or the high fuel consumption of airplanes. By placing radar transmitter/receiver in near-space platforms, many functions that are currently performed with satellites or airplanes could be performed in a cheaper way. Inspired by these advantages, this paper introduces several near-space vehicle-based radar configurations, such as near-space passive bistatic radar and high-resolution wide-swath (HRWS) synthetic aperture radar (SAR). Their potential applications, technical challenges and possible solutions are investigated. It is shown that near-space is a satisfactory solution to some specific remote sensing applications. Firstly, near-space passive bistatic radar using opportunistic illuminators offers a solution to persistent regional remote sensing, which is particularly interest for protecting homeland security or monitoring regional environment. Secondly, near-space provides an optimal solution to relative HRWS SAR imaging. Moreover, as motion compensation is a common technical challenge for the described radars, an active transponder-based motion compensation is also described.

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“…Synthetic Aperture Radar interferometry (InSAR) has the potential to measure temperate glacier displacement with a large coverage compared to sparse terrestrial ground measurements [1]. Depending on the surface cover (rocks, snow or ice), the scattering properties may change with time and induce the decrease of interferogram coherence i.e.…”

Section: Introductionmentioning

confidence: 99%